无法在Rails上使用ruby连接SQL Server

Question

我是Ruby的新手，正在尝试建立与SQL Server的连接。 我浏览了各种文章，但仍然无法连接到sql server。

$ ruby -v
ruby 2.4.4p296 (2018-03-28 revision 63013) [x64-mingw32]

$ rails -v
Rails 5.2.0

创建简单的Rails应用程序后，我已根据sql设置更改了database.yml。

default: &default
  adapter: sqlserver
  mode: odbc
  dsn: sqlserverapp
  username: prakash
  password:
  host: localhost
  database: sqlserverapp
development:
  adapter: sqlserver
  mode: odbc
  dsn: sqlserverapp
  username: prakash
  password:
  host: localhost
  database: sqlserverapp
production:
  adapter: sqlserver
  mode: odbc
  dsn: sqlserverapp
  username: prakash
  password:
  host: localhost
  database: sqlserverapp

尝试使用两个odbc连接正常设置错误：

C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:84:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'activerecord-sqlserver-adapter'. (Bundler::GemRequireError)
Gem Load Error is: undefined method `alias_method_chain' for #<Class:ActiveRecord::Base>
Did you mean?  alias_method
Backtrace for gem load error is:
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/active_record/connection_adapters/sqlserver_adapter/core_ext/active_record.rb:13:in `singleton class'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/active_record/connection_adapters/sqlserver_adapter/core_ext/active_record.rb:12:in `included'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/active_record/connection_adapters/sqlserver_adapter/core_ext/active_record.rb:145:in `include'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/active_record/connection_adapters/sqlserver_adapter/core_ext/active_record.rb:145:in `<top (required)>'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/active_record/connection_adapters/sqlserver_adapter.rb:3:in `<top (required)>'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activerecord-sqlserver-adapter-2.3.8/lib/activerecord-sqlserver-adapter.rb:1:in `<top (required)>'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:71:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:71:in `block in require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:70:in `require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:79:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:76:in `each'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:76:in `block in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:65:in `each'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:65:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler.rb:114:in `require'
C:/Sites/sample/config/application.rb:7:in `<top (required)>'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:145:in `block in perform'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `tap'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `perform'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<top (required)>'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
bin/rails:4:in `<main>'
Bundler Error Backtrace:
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:80:in `block (2 levels) in require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:76:in `each'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:76:in `block in require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:65:in `each'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler/runtime.rb:65:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/lib/bundler.rb:114:in `require'
        from C:/Sites/sample/config/application.rb:7:in `<top (required)>'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:145:in `block in perform'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `tap'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `perform'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<top (required)>'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
        from C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
        from bin/rails:4:in `<main>'

Answer 1

您安装了activerecord-sqlserver-adapter gem 2.3.8版本，该版本已有8年的历史，并尝试使用最新版本的Ruby on Rails运行它。 显然，两个版本都不兼容。

此外，查看gem的Rubygem页面 -尚无支持Ruby on Rails 5.2的版本。

我的建议是将您的应用程序降级到5.1并推迟更新到Rails 5.2，直到您的应用程序所依赖的所有gem都支持5.2

您可能希望在GitHub上订阅这些问题以进行进一步更新：

• https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/issues/636
• https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/issues/647